Improvement in calendar-clocks



T. T. STRODE.

Calendar Clock.

Patented Aug. 1, 1865.

N. PETERS. Pholc-Lilhngflzpher. Washi1glufl. D. (L

one figure after the otherls brought under the openlng, ancl ab the end 0f the monththefigure thlrty-one (31) ls flsible through sald openlng, as shown. At the beginning 0f the next day, or ab mldnlghtbetween the 3lst of March and the 1st of April, the ehannelf leadlng from the perlphery 0f the monh-wheel to thefirst groove passes under the projectlon g, and the sllde, lmpelled by lts own gravlty, drops down, so that the projeetlon bears 0n the first groove and the name April is vlslble through the a-perture in the (llal. At the same tlme the figure 1 on the rlm is brought in view through the openlng in the sllde opposlte the name April. 'lhe first groove termlnates in an 0bllque channel,f whlch is so sltuated that the slide changes from the first to the second groove ab the end 0f the 30th day, wl1en the name May ls brought in view, and so forth for eaeh suceeedlng month.

ln order t0 skip the figure 31 am the end of those months whlch have 0nly thirty (30) days the names 0f the months und the openlngs op poslte t0 them are placecl in an obllque positlon', so that if the sliclechanges from April to May the figure 31 011 the rln1 0f the 1nonthwheel ls covered up and the figure 1 exhlblted, and the same as the slldev changes from June so J uly, fro1n September t0 0et0ber, and from November t0 Deeember.

The last groove in the month-wheel nearest to lts center-ls contlnuous. 'lhls groove corresponds to the month 0f Febrna-ry, and at the end 0f tl1at month the slide must be ralsed up, whlch ls done by turnlng the month-wheel back. All complicated meehanism is thus avoided.

1f February has owenty-elght (28) days the sllde is ralserl 0n filmt day and lt lt happens t0 have t-wenty-nlne (29) clays the slldeisraised 0n that day, and if the operatlon should be omltted on the preclse day lt can be reaclily done on any other day whenever the omisslon ls noticed.

The month-wheel can l e r'eadlly sec for any day of the year.

It musta be remarked that the same effect would be produced by uslng one projectlon on the slide for eaeh month, sald. projectlons being placed in the same Order 011 the sllde as the openlngs beoween the grooves now are 011 the montl1-wheel. Then all the face 011 the month-wheel between the figure-rlng and axle must be removed t0 the deph of the present grooves. Agaln, the sa1ne efi'eet can be produeed after the face 0f the month-wheel ls cut away, as above descrlbed, from the figure-rlng to the axle; then, by havlng one projeetion 0n each side of the plante contalnlng the nan1es of the months, the lnside projection being as lt now is in the clrawings, and the outslde projectlon belng right opposite; oben let there be ten (10) plus er projectlons in the face of the month-wheel, sald plus occupying the same posltlonas the last; ten (10) openlngs between the month-wheel grooves. Tl1en there must be a zlgzag openlng in the dlal-plate, from the figure-rlng t0 axle, in form of the one shown. Then the projectlon 011 the inslde 01. sairl plate woulcl pass arounrl 011 the periphery of the month-wheel, as lt now does, and (lr0p through the first opening, as lt now cloes. Then the outer projection would eatul1 in the notches in the dial-openlng, und be removecl therefrom by one aller another of sald ten (10) projectlons in the face of the month-wheel comlng in contact wlth the projeetlon 0n the lnslde 0f seid plate ab the end ot' each montl1, excepl: Merck und February. 'll1econstructlon whlch I have shown, however, ls the slmplest and easlest to make, and z ealemlar-clook made accor(llng to my lnvention recommencls ltself by its great simpliclty.

I clalm as new, and deslre '00 secure by Letters Patent The slide B, marked wltl1 the nmnes of the months an l provlded wlth openlngs h, t0 operate in comblnatlon wltl1 the wheel A, mmked wlth figures from l to 31, anal provided wltl1 coneentrlc grooves c, substantially in the manner and for the purpose herein set forth.

THOMAS T. STRODE.

Wltnesses:

Rom. B. STEEN, JAMES W1nsor1. 

